Weibull MTBF
Weibull distribution mean: MTBF = η · Γ(1 + 1/β). Useful when β ≠ 1 (wear-out or infant-mortality).
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Formula, assumptions, and limits
| Symbol | Meaning | Unit |
|---|---|---|
| Weibull scale | h | |
| Weibull shape | ||
| Gamma function |
Source: Abernethy - The New Weibull Handbook
In short
Weibull distribution mean: MTBF = \u03b7 \u00b7 \u0393(1 + 1/\u03b2).